122312112213 has 4 divisors (see below), whose sum is σ = 163082816288. Its totient is φ = 81541408140.

The previous prime is 122312112203. The next prime is 122312112253. The reversal of 122312112213 is 312211213221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312211213221 = 3 ⋅104070404407.

It is not a de Polignac number, because 122312112213 - 2¹⁸ = 122311850069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122312112213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122312112203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20385352033 + ... + 20385352038.

It is an arithmetic number, because the mean of its divisors is an integer number (40770704072).

Almost surely, 2^122312112213 is an apocalyptic number.

It is an amenable number.

122312112213 is a deficient number, since it is larger than the sum of its proper divisors (40770704075).

122312112213 is an equidigital number, since it uses as much as digits as its factorization.

122312112213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40770704074.

The product of its digits is 288, while the sum is 21.

Adding to 122312112213 its reverse (312211213221), we get a palindrome (434523325434).

The spelling of 122312112213 in words is "one hundred twenty-two billion, three hundred twelve million, one hundred twelve thousand, two hundred thirteen".